Faris NyanNyan, whose real name is Rumiho Akiha, comes from the wealthy Akiha family. Her family owns significant portions of Akihabara, and their influence helped shape the district into a major otaku cultural hub. She cultivates a playful, cat-themed persona as the owner and top waitress at the maid café "MayQueen+Nyan²." As part of her professional identity to enhance "moe" appeal, she consistently adds "nya" or "nyan" to her speech. Her appearance features long pink hair, typically styled in twin drills or braids, pink eyes, and a petite stature. She is frequently seen in her maid uniform with cat ears, a ribboned apron, and frilled accessories, though she also wears a casual amber dress with a tiara. Beneath her cheerful façade, Rumiho exhibits perceptiveness and emotional complexity. She claims the self-devised ability "Cheshire Break," enabling her to discern others' emotions and detect deception through eye contact and micro-expressions. Her true personality contrasts with her Faris persona; she is intelligent, self-conscious, and privately struggles with loneliness stemming from her mother's frequent absences and a limited social circle. She maintains significant trust only in her butler, Kuroki, and later, the Future Gadget Lab members. Her background centers on childhood trauma. At age eight, she blamed her father for prioritizing work over her birthday, declaring she wished him dead. He subsequently died in a plane crash while attempting to return home, leaving Rumiho burdened by guilt. This event indirectly allowed her to establish her maid café, fulfilling a childhood dream. In certain world lines (specifically Alpha attractor fields), her father survived. In these timelines, she pursued competitive gaming in RaiNet AccessBattlers, excelled, and later befriended Rintaro Okabe and Mayuri Shiina. Her involvement with the Future Gadget Lab begins when she requests their help in sending a D-Mail to prevent her father's death. This action inadvertently shifts the world line to one where Akihabara becomes a less prominent otaku center, and Mayuri faces imminent death. Recognizing the consequences, she chooses to retract her D-Mail, sacrificing her father's survival to restore the original timeline. In the Omega attractor field (Faris ending), her D-Mail creates a world line where she shares a romantic relationship with Okabe. However, his Reading Steiner prevents him from remembering their history, compelling them to rebuild their connection. Character development occurs in spin-offs like *Linear Bounded Phenogram*. Years after global upheaval, she mentors Nae Tennouji, advising her on processing trauma and the nuanced role of white lies in relationships, reflecting her own growth in overcoming fears of abandonment and accepting emotional complexity. Her interactions with Okabe highlight their mutual affinity for role-playing and elaborate delusions, often escalating his fictional scenarios. She remains one of his few allies who engages his "Hououin Kyouma" persona without ridicule. Additional attributes include her strategic prowess in RaiNet AccessBattlers, business management skills, and the etymology of her alias: "Faris" derives from Latin "fēlis" (cat), aligning with her café persona. Despite her wealth and status, she conceals her family background to avoid altered perceptions from others.